Lxam  andrew houston



Patented Noiz. ,4., 191@ El. am, AND w.. A. Hmmm@J HJM LM 1.4km -PEfN lMPM-EMMEN FILED MMI.. 13. 1:9119. l 9323393@ WIT/VESSES annum)mmmnousron, or MINNEAPOLIS, mmmsore, Aem w fl:

. HOUSTON, or' sIoUxoI'rY, Iowa.

FOUNTAIN-PEN.

Specification of Letters Patent.

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- Appnnonaied Haren e, 194,8. serial navaanaea. Y

5 Hennepin and State of Minnesotaand'WIL- L'IAM ANDREW HoUsToN, acitizen-ofthe United States, and resident of Sioux City,

in' the county of Woodbury and State of Iowa, 'have invented a new anduseful Im- Our invention relates Ato improvements in fountain'pens, andit consists intheN conf structions', cmbinations, and arrangementsherein vdescribed andy claimed` Anobject ofgo'ur invention is to provideafountain nvlincluding a 'barrel having a plunger movable inboethereofto draw in a quantityo'f by suction, the bore Of the barrelbeing enlargednear the point of the pento form an expansion chamber intowhich the plunger" is adapted to ex- .pand after the ink Jhasbeen'draw'n in.

Another Objectv of the invention is to provide a fountain pen includingkanink barrel with a plunger movable in the bore thereof, the plungerhaving a plunger rod connected thereto, and bein adapted 'to engage theend of a sleeve o an en -plug when it is quantity of ink, the plungerbeing subselquently separated from the end of the sleeve-by moving theplunger rod to open `the plunger into -a chamber above it.

i in the4 following specification, reference beinghad to theaccompanying drawing in Which-r 40 Y n Figure 1 is a longitudinalsection of a fountain pen' embodying the features ofour invention,theplunger being *in the outer position.l f r Fig. 2 is a section ofthev"-`fountain pen showing the plunger about to be moved ad,- jacent totheexpansion chamber. l Fig. 3 is af side 'elevation of the fountain penparts being shown in section, showing the plunger in vposition in theexpansion chamber andthe ink passage open.

In carrying out our invention, we provide anink barrel l which is madeof any suitv `able material such ,as hard r bber, and maybe made Oiatranspallnt-material if it be provement in Fountain-Pens, of whichthetdesired to move the' plunger and draw iii' a\ I a passage and permit theink to fiow through 35l y Other objects and advantages will appear sodesired,'so that the user of the pen can see how. much ink it contains.The barrel 1l has a bore 2 which is enlarged near one end as at 3, toform an expansion chamber.

f'v'lhe bore 2 of the barrel 1 counterbored and threaded at 4: and V`5inthe plug and point ends, respectively.' The point.

end .of the barrel 1 has "external threads upon which a capmaybescrewed.

A nozzle 8 which'carries a pen point 9, is screwed into the counter-bore5 iny the point end of the ink barrel 1. The nozzle 8. has the usual inkduct 10 through which the ink flows to' the pen point when the fountainpen isused in writing, and through which the ink flows into the bore 2of the barrel 1,*when the pen is being filled, in a' be described. g yA' vpl ger 11 slides in the bore 2 .of the barrel 1, and has a centralink passage 12' which communicates at one side with a port 13. The inkpassage 12 is enlarged at the top to forma valve seat 14 with 'a conicallor rounded surface to properly receive a similarly' formed end of asleeve 15 which Visv adapted to engage the valve seat 14 and form anair-tight joint atIv certain times.

A plunger rod 16 is movable in the bore of the sleeve 15, Aand is'connected to the 4plungelll by a cross pin 17. The plunger rod 16s'longer than the sleeve 15 as will be evident :t'rom'the'A drawing, andextends toward the outer surface of an end plug 18 to which the sleeve15 is secured in any suitable manner.' The `end plug 18 has a conicalrecess 19 into which a button 20 of the plunger rod 16 is adapted to bepressed.

The inner end of the end plug 18 is restricted in diameter at 21 tofornian `an nular shoulder 22. When the parts are-in -the position indicatedin Fig. 2 of l.the drawing, 'they restricted portion 21 enters thethreaded end 4 of the barrel 1, and the annular .shoulder 22 restson theedge of the bore. The portion 21 is not threaded but simply slides intothe threaded bore so that the end plug 18 may readily abe withdrawn bysimply grasping the end plug at the throat Of the `plug and pulling itout.

which are screwed into-the threaded plugA Xend 4, as plainly shown inthe drawing.

fIhe plunger l1 S made of some elastic or v sponge-like material and isadapted to ex-l pand into the expansion chamber 3 atthe point end ofthebarrel 1, when it is moved to theoperative position of the pen indicatedin Fig. 3. The plunger 1l may be `made of .soft rubber which is at onceelastic enough to expand into the expansion chamber 3, and also strongenough to provide a proper support for the cross pin 17 of the plungerrod 16.

The manner of operation in lling the pen is as follows: The normal,position of the plunger 11. when the pen is 1n use, is in the positionindicated in Fig. 3, wherein Ithe vplunger 11 is shown as havingexpanded to lill the expansion chamber 3. rllhe end of the sleeve :15 isalso unseated from'the valve Seat 14 in the plunger 11, so that the inkin the bore 2 of the ink barrel 1 above the plunger` 11l may freely o'wout through the passage 12, the port 13, and the duct 10.

When the fountain pen becomes empty, the end plug is grasped by thefingers and pulled out to the position shown in Fig. 1.

The bore 2 of the barrel l` is thus cleaned of ink which may adhere tothe sides, and such ink passes through .the passage 12 which is now open-because the end ofthe sleeve 15 is unseated from the valve seat 14.When the end plug 18 is pulled out as just described, the plunger 11moves l in the ,bore 2, `opening .the passage 12. Thus the plunger 1 1does not move against any back pressure, as it might'do were the passagell2 ,not opened,

.whereupon lair would be compressed behind the plunger.

After the end plug 1 8 ,is pulled out to the position shown in Fig. I1,it is `again pushed inwardly or downwardly toward the point of the pen.Theact of pushing the end plug 18 downwardly .or inwardly, causes theloutton 2O to become unseated from the recess 19, and the end of thebore of the sleeve 15 `to tightly engage the valveseat 14. The partsjust described being in `this position, the -inward pushing of the endplu@ 18 continues, and a vacuum is formed .in t e chamber belhind vtheplunger l1. The plunger 1,1, of course, expands -into the expansionchamber 3 when it reaches said chamber. The ,point of the pen is nowlaced in the ink and the button 2O -is pushe into the recess 19 so thatthe plunger 11 may fully expand into the expansion chamber 3 and openthe passage 12 at the valve seat 14.

The .passage 12 having been opened, the ink rushes in through the duct10, the passage 12, and the valve seat 14', Ainto the charnlloer abovethe plunger, thus .filling the barrel of the pen.

While the construction and arrangement of the device as illustrated inthe accompanyingdrawing is that of a generally preferred form, obviouslymodications and changes may be made without departing from the I spiritof the invention or the gageable with the end plug when the plunger seatand the-end of the sleeve are vin disengagement.

2. A Afountain pen includinga barrel having a bore, a plunger in thebore and having a passage and a valve seat, an end plug having a sleeveadapted to disengage the valve seat when the plunger is drawn outwardl7to pre'ventthe formation of a back pressure` against the plunger, aplunger rod in the sleeve connected to the plunger,'and a button on theend of the plunger rod adapted to engage the end plug when. the plungeris drawn outwardly.

3. A fountain pen includinga barrel having a bore, a plunger in the boreand having a passage and a valve seat, an end plug adapted toengage theend ofthe barrel when in .the inward position, the end plug having asleeve disposed in the bore, the end of the .sleeveengaging the valveseat when the,. Y plunger-1s pushed into the bore, a plunger roddisposed in the sleeve and. connected to the plungenand a button o n theplunger rod adapted to disengagethe end plug when the plunger is pushedinwardly in` the bore; by the end plug.

4. A. fountain pen including a barrel havllglg a bQI'e Mld m eipmonchamber .near 'the pen end, a plunger movable in the bore and havingl apassage and ,a valve seat, an end plug aving a sleeve .disp-@Sed in thebore, the end ol the'sleeve engaging the Y valve seat when the plunger,is -pushed int-o-y the bore bythe end plug, a lplunger rod in thesleeve and havin disengagement with the end plug When the plunger ispushed into the bore, 'said button plunger ada te to expand into andlill ,the

expansion c amberfan end plug having a sleeve engag'able with theplunger to push the plunger toward the epansee Chamber,

connection with thel plunger, and a ybutton on the ,plunger rod in.

the end plug having a loose connection With the barrel, and a plungerrod in the sleeve connected 'to the plunger to subsequently disengagethe plunger from the sleeve and push4 it into the expansion chamber, theexpanded plunger forming a key preventing the casual rel. Y

7 In a fountain pen, an ink barrel having a bore provided with anexpansion chamber l and an adjacentthreaded counter-bore, an

. elastic plunger adapted to lill the expansion chamber, the plungerhaving an ink passage.

Aplul'iger rod connected with the'plunger and Workingin the sleeve, saidplunger rod being adapted to move the plunger when the sleeve ceases tomove the plunger.

'9.111 a' fountain en, a barrelhav-ing a bore, a plunger mova le inthebore and hav# ing across pin, a' plunger rod connected to the cross pin,an end plug having a sleeve displacement of the end plug fram thebarsurrounding the plunger rod, the end of the sleeve being engageablewith the plunger to push the plunger inwardly, said plunger rod beingadapted to subsequently `move the plunger independently of the sleeveWhen the plunger reaches the limit of movement under the action of thesleeve.

10. A fountain pen including a barrel having a bore and threadedcounter-bores at the plug and point ends, the bore having an expansionchamber adjacent to the point end, a' plunger in the b'ore, the plungerhav' ing an ink passage, and valve seat, a nozzle in the point end'counter-bore, a packing in the plug end counter-bore, an end plughaving a restricted boss forming an yannular shoulder and having a'sleeve' passing through the packing into the bore, the end of thesleeve engaging the valve seat to push the vplunger adjacent to theexpansion chamber, the annular shoulder being adapted to then engage theadj acentrim of the plug end counter-bore, a plunger rod in the sleeveand connected to the plunger, and a button on the end of the plunger rodexposed at the end plug, said bottom being adapted 'to be pressed tomove the plunger .into the expansion' chamber subsequently to the inwardmovement of the plunger through the mediumof the end plug and sleeve.

ETMUND runnenHOUSTON.4 WiLLrAM ANDREW HOUSTON.

